3543458

Information

• Patent Grant
• 3543458

• References
• Source

• Patent Number

  3,543,458

• Date Filed

  Not available

• Date Issued

  Tuesday, December 1, 1970
  54 years ago

• CPC

  • E04G11/46 - of hat-like or trough-like shape encasing a rib or the section between two ribs or encasing one rib and its adjacent flat floor or ceiling section
  • E04B5/21 - Cross-ribbed floors
  • E04B5/48 - Special adaptations of floors for incorporating ducts

• US Classifications

  • 052 - Static structures
  • 249 - Static molds
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 454 - Ventilation